Merge pull request #33 from terrible-broom/master

Fixed umounting mountpoints at container stop.
Now migration copies /var/lib/lxc/<vmname>/config
add mount and unmount during contanier migration
minor fix
Merge pull request #34 from azalio/master

Монтирование и размонтирование виртуалки во время миграции.
remove yaml config file when destroying container.

what is the reason to use undocumented option "configs"?
who needs config file without existing container?